Effects of Natural Versus Synthetic Consonant and Vowel Stimuli on Cortical Auditory-Evoked Potential

Abstract

Background and Objectives: Natural and synthetic speech signals effectively stimulate cortical auditory evoked potential (CAEP). This study aimed to select the speech materials for CAEP and identify CAEP waveforms according to gender of speaker (GS) and gender of listener (GL). Subjects and Methods: Two experiments including a comparison of natural and synthetic stimuli and CAEP measurement were performed of 21 young announcers and 40 young adults.

AI voices reduce cognitive activity? A psychophysiological study of the media effect of AI and human newscasts in Chinese journalism

“…For specifics on other electrodes, please refer to the details in https://osf.io/wcemb/. The results are consistent with Manfredi et al (2021)'s andSong et al (2022)'s research, which suggests the asymmetry in frontal EEG activity is associated with experiential pleasure. Then, we analyzed four common waves (α, β, θ, δ) in human brain electrical activity in the prefrontal from both groups by using independent samples t-test, and the following results emerged:…”

“…We discovered that in the Chinese context, the human voice broadcast had a stronger mediating effect than the AIgenerated voice. This finding may be related to the fact that the Chinese language has more syllable, intonation, and stress variation than English, which leads to more cognitive scheduling and memory processing in the listener's brain and supports the Song et al's (2022) experiment, which suggested that the human voice and the synthetic voice processed different phonemes in the English context, resulting in different N2 and P3. In summary, hypothesis 2 was supported.…”

“…Academics examine more than AI news writing when AI is used in news broadcasting, as little is known about how listeners will react to AI-delivered audio (Kim et al, 2022). In the context of AI broadcasting weather news, Kim et al's (2022) study compared perceptions of AI news coverage to perceptions of human news agencies. There was no difference between types of newsreaders in terms of the information listeners sought regarding their intentions and behavior intentions.…”